Keep option is only available from libvips 8.15

src/Encoders/AvifEncoder.php

@@ -8,6 +8,7 @@
 use Intervention\Image\Encoders\AvifEncoder as GenericAvifEncoder;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class AvifEncoder extends GenericAvifEncoder implements SpecializedInterface
@@ -19,16 +20,29 @@ class AvifEncoder extends GenericAvifEncoder implements SpecializedInterface
      */
     public function encode(ImageInterface $image): EncodedImage
     {
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $image->core()->native()->writeToBuffer('.avif', $this->getOptions());
 
-        $result = $image->core()->native()->writeToBuffer('.avif', [
+        return new EncodedImage($result, 'image/avif');
+    }
+
+    /**
+     * @return array{lossless: bool, Q: int, keep?: int, strip?: bool}
+     */
+    protected function getOptions(): array
+    {
+        $options = [
+            'lossless' => $this->quality === 100,
             'Q' => $this->quality,
-            'keep' => $keep,
-            // 'speed' => 6, // Speed (faster encoding)/*
-            // 'effort' => 4, // Compression effort*/
-        ]);
+        ];
 
-        return new EncodedImage($result, 'image/avif');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = $strip;
+        }
+
+        return $options;
     }
 }

src/Encoders/HeicEncoder.php

@@ -8,6 +8,7 @@
 use Intervention\Image\Encoders\HeicEncoder as GenericHeicEncoder;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class HeicEncoder extends GenericHeicEncoder implements SpecializedInterface
@@ -19,14 +20,29 @@ class HeicEncoder extends GenericHeicEncoder implements SpecializedInterface
      */
     public function encode(ImageInterface $image): EncodedImage
     {
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $image->core()->native()->writeToBuffer('.heic', $this->getOptions());
 
-        $result = $image->core()->native()->writeToBuffer('.heic', [
+        return new EncodedImage($result, 'image/heic');
+    }
+
+    /**
+     * @return array{lossless: bool, Q: int, keep?: int, strip?: bool}
+     */
+    protected function getOptions(): array
+    {
+        $options = [
+            'lossless' => $this->quality === 100,
             'Q' => $this->quality,
-            'keep' => $keep,
-        ]);
+        ];
 
-        return new EncodedImage($result, 'image/heic');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = $strip;
+        }
+
+        return $options;
     }
 }

src/Encoders/Jpeg2000Encoder.php

@@ -8,6 +8,7 @@
 use Intervention\Image\Encoders\Jpeg2000Encoder as GenericJpeg2000Encoder;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class Jpeg2000Encoder extends GenericJpeg2000Encoder implements SpecializedInterface
@@ -25,15 +26,29 @@ public function encode(ImageInterface $image): EncodedImage
             $vipsImage = $image->core()->frame(0)->native();
         }
 
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $vipsImage->writeToBuffer('.j2k', $this->getOptions());
 
-        $result = $vipsImage->writeToBuffer('.j2k', [
+        return new EncodedImage($result, 'image/jp2');
+    }
+
+    /**
+    * @return array{lossless: bool, Q: int, keep?: int, strip?: bool}
+    */
+    protected function getOptions(): array
+    {
+        $options = [
             'lossless' => $this->quality === 100,
             'Q' => $this->quality,
-            'keep' => $keep,
-        ]);
+        ];
 
-        return new EncodedImage($result, 'image/jp2');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = $strip;
+        }
+
+        return $options;
     }
 }

src/Encoders/JpegEncoder.php

@@ -7,8 +7,10 @@
 use Intervention\Image\Colors\Rgb\Colorspace as Rgb;
 use Intervention\Image\EncodedImage;
 use Intervention\Image\Encoders\JpegEncoder as GenericJpegEncoder;
+use Intervention\Image\Exceptions\RuntimeException;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class JpegEncoder extends GenericJpegEncoder implements SpecializedInterface
@@ -20,27 +22,41 @@ class JpegEncoder extends GenericJpegEncoder implements SpecializedInterface
      */
     public function encode(ImageInterface $image): EncodedImage
     {
-        $blendingColor = $this->driver()->handleInput(
-            $this->driver()->config()->blendingColor
-        );
-
         $vipsImage = $image->core()->native();
 
         if ($image->isAnimated()) {
             $vipsImage = $image->core()->frame(0)->native();
         }
 
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $vipsImage->writeToBuffer('.jpg', $this->getOptions());
+
+        return new EncodedImage($result, 'image/jpeg');
+    }
 
-        $result = $vipsImage->writeToBuffer('.jpg', [
+    /**
+     * @throws RuntimeException
+     *
+     * @return array{Q: int, optimize_coding: bool, background: array<int>, keep?: int, strip?: bool}
+     */
+    protected function getOptions(): array
+    {
+        $options = [
             'Q' => $this->quality,
             'interlace' => $this->progressive,
-            'keep' => $keep,
             'optimize_coding' => true,
-            'background' => array_slice($blendingColor->convertTo(Rgb::class)->toArray(), 0, 3),
-        ]);
+            'background' => array_slice($this->driver()->handleInput(
+                $this->driver()->config()->blendingColor
+            )->convertTo(Rgb::class)->toArray(), 0, 3),
+        ];
 
-        return new EncodedImage($result, 'image/jpeg');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = $strip;
+        }
+
+        return $options;
     }
 }

src/Encoders/TiffEncoder.php

@@ -8,6 +8,7 @@
 use Intervention\Image\Encoders\TiffEncoder as GenericTiffEncoder;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class TiffEncoder extends GenericTiffEncoder implements SpecializedInterface
@@ -19,15 +20,29 @@ class TiffEncoder extends GenericTiffEncoder implements SpecializedInterface
      */
     public function encode(ImageInterface $image): EncodedImage
     {
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $image->core()->native()->writeToBuffer('.tiff', $this->getOptions());
 
-        $result = $image->core()->native()->writeToBuffer('.tiff', [
+        return new EncodedImage($result, 'image/tiff');
+    }
+
+    /**
+     * @return array{lossless: bool, Q: int, keep?: int, strip?: bool}
+     */
+    protected function getOptions(): array
+    {
+        $options = [
             'lossless' => $this->quality === 100,
             'Q' => $this->quality,
-            'keep' => $keep,
-        ]);
+        ];
 
-        return new EncodedImage($result, 'image/tiff');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = true;
+        }
+
+        return $options;
     }
 }

src/Encoders/WebpEncoder.php

@@ -8,6 +8,7 @@
 use Intervention\Image\Encoders\WebpEncoder as GenericWebpEncoder;
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\ForeignKeep;
 
 class WebpEncoder extends GenericWebpEncoder implements SpecializedInterface
@@ -19,15 +20,29 @@ class WebpEncoder extends GenericWebpEncoder implements SpecializedInterface
      */
     public function encode(ImageInterface $image): EncodedImage
     {
-        $keep = $this->strip || (is_null($this->strip) &&
-            $this->driver()->config()->strip) ? ForeignKeep::ICC : ForeignKeep::ALL;
+        $result = $image->core()->native()->writeToBuffer('.webp', $this->getOptions());
 
-        $result = $image->core()->native()->writeToBuffer('.webp', [
+        return new EncodedImage($result, 'image/webp');
+    }
+
+    /**
+     * @return array{lossless: bool, Q: int, keep?: int, strip?: bool}
+     */
+    protected function getOptions(): array
+    {
+        $options = [
             'lossless' => $this->quality === 100,
             'Q' => $this->quality,
-            'keep' => $keep,
-        ]);
+        ];
 
-        return new EncodedImage($result, 'image/webp');
+        $strip = $this->strip || $this->driver()->config()->strip;
+
+        if (VipsConfig::atLeast(8, 15)) {
+            $options['keep'] = $strip ? ForeignKeep::ICC : ForeignKeep::ALL;
+        } else {
+            $options['strip'] = $strip;
+        }
+
+        return $options;
     }
 }

src/Modifiers/StripMetaModifier.php

@@ -9,6 +9,7 @@
 use Intervention\Image\Interfaces\ImageInterface;
 use Intervention\Image\Interfaces\ModifierInterface;
 use Intervention\Image\Interfaces\SpecializedInterface;
+use Jcupitt\Vips\Config as VipsConfig;
 use Jcupitt\Vips\Exception as VipsException;
 use Jcupitt\Vips\ForeignKeep;
 use Jcupitt\Vips\Image as VipsImage;
@@ -24,9 +25,13 @@ class StripMetaModifier implements ModifierInterface, SpecializedInterface
      */
     public function apply(ImageInterface $image): ImageInterface
     {
-        $buf = $image->core()->native()->tiffsave_buffer([
+        $options = VipsConfig::atLeast(8, 15) ? [
             'keep' => ForeignKeep::ICC,
-        ]);
+        ] : [
+            'strip' => true,
+        ];
+
+        $buf = $image->core()->native()->tiffsave_buffer($options);
 
         $image->setExif(new Collection());
         $image->core()->setNative(

tests/Unit/Encoders/WebpEncoderTest.php

@@ -7,6 +7,7 @@
 use Intervention\Image\Drivers\Vips\Driver;
 use Intervention\Image\Drivers\Vips\Encoders\WebpEncoder;
 use Intervention\Image\Drivers\Vips\Tests\BaseTestCase;
+use Intervention\Image\ImageManager;
 use PHPUnit\Framework\Attributes\CoversClass;
 
 #[CoversClass(WebpEncoder::class)]
@@ -30,4 +31,15 @@ public function testEncodeAnimated(): void
         $result = $encoder->encode($image);
         $this->assertImageSize($result, $image->width(), $image->height());
     }
+
+    public function testEncoderStripExifData(): void
+    {
+        $image = $this->readTestImage('exif.jpg');
+        $this->assertEquals('Oliver Vogel', $image->exif('IFD0.Artist'));
+        $encoder = new WebpEncoder(strip: true);
+        $encoder->setDriver(new Driver());
+        $result = $encoder->encode($image);
+        $image = ImageManager::withDriver(Driver::class)->read($result);
+        $this->assertNull($image->exif('IFD0.Artist'));
+    }
 }